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Moderately critical

LetterGrade Cross-Site Scripting and Script Insertion Vulnerabilities

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Release Date:  2007-09-14    Last Update:  2007-09-20    Views:  8,677

Secunia Advisory SA26768

Where:

From remote

Impact:

Cross Site Scripting

Solution Status:

Unpatched

Software:

CVE Reference(s):

Description


agentsteal has reported some vulnerabilities in LetterGrade, which can be exploited by malicious people to conduct cross-site scripting attacks or by malicious users to conduct script-insertion attacks.

1) Input passed as e.g. a student's email address is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which is executed in a user's browser session in context of an affected site when the malicious data is viewed.

2) Input passed to the "year" parameter in genbrws/Student/cal_month.php3 is not properly sanitised before being returned to a user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site. Reportedly, other parameters in the calendar are also affected.

A full path disclosure and user enumeration weakness have also been reported.


Solution:
Edit the source code to ensure that input is properly sanitised.

Provided and/or discovered by:
agentsteal

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: LetterGrade Cross-Site Scripting and Script Insertion Vulnerabilities

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